Converter



(No Model.) I

O. M. ALLEN.

CONVERTER. No. 519,220. Pate ntedMay 1, 1894.

I UNITED STATES LATENT FFICE.

CHARLES M. ALLEN, OF BUTTE, MONTANA.

CONVERTER.

SPECIFICATION forming part of Letters Patent No. 519,220, dated May 1, 1894.

Application filed April 18, 1893- serial No. 470,828. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES M. ALLEN, a

citizen of the United States, residing at Butte city, Montana, have invented certain new and useful Improvements in Converters, of which the following is a specification.

The drawing illustrates a vertical section of my improved converter and dust chamber, connected to a smoke stack. I

In making my improvement, I makeacon verter, A, which may be made with water jacket side walls and bottoms, B, or in other desired ways. It maybe a converter adapted to be tipped, or of any other forms of construction. It opens at its upperend into a dust I chamber, 0, into which the particles of dust blown out of the converting chamber by the force of the blast is collected and in which it accumulates. I have provided the dust chamber with an incline or hopper floor, so as to lead the accumulating dust to a desired point, as at c. I carry a blast pipe,D, into theconverting chamber through tuyeres to introduce the desired blast of air at or near the bottom. I carry a pipe, E, from the exit point of the dust chamber into the blast pipe, so that it communicates with the dust chamber and the converting chamber through the blast pipe, although, if desired, it may be arranged to communicate directly with the converting chamber, though I prefer the arrangement shown. Iarrange valves, 6, inthe dust pipe,

so that when it is desired to convey the dust accumulated in the dust chamber, the upper valve may be opened until the space between it and the lower valve fills with dust, when it may be closed and the lower valve opened to allow the dust to pass on down into the blast pipe, and to be blown into the converting chamber at or near the bottom of the molten material. By this arrangement, back pressure of the air is prevented, and the introduction of the dust secured. It willbe understood that the converter communicates with a smoke stack, F, and that proper means are employed for introducing ores to be smelted and for tapping the converter and drawing OK the molten material from time to time, as

scribed CHARLES M. ALLEN.

Witnesses:

THOMAS A. BANNING, SAMUEL E. HIBBEN. 

